Sir,NETRAVATHY starts from Kerala and routed via Nagercoil,Madurai,Erode,Podanur and enter again Kerala via Palakat and proceeds to Mumbai.So naturally KL passengers have benefit for seat/ Reservation,is it not?So many trains started from Tamilnadu ,operated via Kerala and reenter to Tamilnadu in the circuited route.But no single train started from Kerala,operated via Tamilnadu and reenter into Kerala via Palakad.